The magnetic field dependence of the dielectric permittivity of Terfenol-D/PbZr x Ti 1-x O 3
magnetoelectric composites in the temperature range from 200 K to 340 K was investigated
systematically. It was found that there is a large magnetodielectric effect up to 15% around
the electromechanical resonance frequency in a magnetic field of 5 kOe at room
temperature. Nonmonotonic variations of dielectric permittivity with magnetic fields are
associated with the mechanical energy loss due to magnetic domain wall motion in the …